diff --git a/charts/k8s-gerrit/container-images/git-gc/tools/gc.sh b/charts/k8s-gerrit/container-images/git-gc/tools/gc.sh
new file mode 100755
index 0000000..e3ad4e0
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/git-gc/tools/gc.sh
@@ -0,0 +1,220 @@
+#!/bin/ash
+# Copyright (C) 2011, 2020 SAP SE
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+usage()
+{
+  echo "Usage: $0 [ -s ProjectName ] [ -p ProjectName ] [ -b ProjectName ]"
+  echo "-s ProjectName     : skip this project"
+  echo "-p ProjectName     : run git-gc for this project"
+  echo "-b ProjectName     : do not write bitmaps for this project"
+  echo ""
+  echo "By default the script will run git-gc for all projects unless \"-p\" option is provided"
+  echo
+  echo "Examples:"
+  echo "  Run git-gc for all projects but skip foo and bar/baz projects"
+  echo "    $0 -s foo -s bar/baz"
+  echo "  Run git-gc only for foo and bar/baz projects"
+  echo "    $0 -p foo -p bar/baz"
+  echo "  Run git-gc only for bar project without writing bitmaps"
+  echo "    $0 -p bar -b bar"
+  echo
+  echo "To specify a one-time --aggressive git gc for a repository X, simply"
+  echo "create an empty file called \'gc-aggressive-once\' in the \$SITE/git/X.git"
+  echo "folder:"
+  echo
+  echo "  \$ cd \$SITE/git/X.git"
+  echo "  \$ touch gc-aggressive-once"
+  echo
+  echo "On the next run, gc.sh will use --aggressive option for gc-ing this"
+  echo "repository *and* will remove this file. Next time, gc.sh again runs"
+  echo "normal gc for this repository."
+  echo
+  echo "To specify a permanent --aggressive git gc for a repository, create"
+  echo "an empty file named "gc-aggresssive" in the same folder:"
+  echo
+  echo "  \$ cd \$SITE/git/X.git"
+  echo "  \$ touch gc-aggressive"
+  echo
+  echo "Every next git gc on this repository will use --aggressive option."
+  exit 2
+}
+
+gc_options()
+{
+  if test -f "$1/gc-aggressive" ; then
+    echo "--aggressive"
+  elif test -f "$1/gc-aggressive-once" ; then
+    echo "--aggressive"
+    rm -f "$1/gc-aggressive-once"
+  else
+    echo ""
+  fi
+}
+
+log_opts()
+{
+  if test -z $1 ; then
+    echo ""
+  else
+    echo " [$1]"
+  fi
+}
+
+log()
+{
+  # Rotate the $LOG if current date is different from the last modification of $LOG
+  if test -f "$LOG" ; then
+    TODAY=$(date +%Y-%m-%d)
+    LOG_LAST_MODIFIED=$(date +%Y-%m-%d -r $LOG)
+    if test "$TODAY" != "$LOG_LAST_MODIFIED" ; then
+      mv "$LOG" "$LOG.$LOG_LAST_MODIFIED"
+      gzip "$LOG.$LOG_LAST_MODIFIED"
+    fi
+  fi
+
+  # Do not log an empty line
+  if [[ ! "$1" =~ ^[[:space:]]*$ ]]; then
+    echo $1
+    echo $1 >>$LOG
+  fi
+}
+
+gc_all_projects()
+{
+  find $TOP -type d -path "*.git" -prune -o -name "*.git" | while IFS= read d
+  do
+    gc_project "${d#$TOP/}"
+  done
+}
+
+gc_specified_projects()
+{
+  for PROJECT_NAME in ${GC_PROJECTS}
+  do
+    gc_project "$PROJECT_NAME"
+  done
+}
+
+gc_project()
+{
+  PROJECT_NAME="$@"
+  PROJECT_DIR="$TOP/$PROJECT_NAME"
+
+  if [[ ! -d "$PROJECT_DIR" ]]; then
+    OUT=$(date +"%D %r Failed: Directory does not exist: $PROJECT_DIR") && log "$OUT"
+    return 1
+  fi
+
+  OPTS=$(gc_options "$PROJECT_DIR")
+  LOG_OPTS=$(log_opts $OPTS)
+
+  # Check if git-gc for this project has to be skipped
+  if [ $SKIP_PROJECTS_OPT -eq 1 ]; then
+    for SKIP_PROJECT in "${SKIP_PROJECTS}"; do
+      if [ "$SKIP_PROJECT" == "$PROJECT_NAME" ] ; then
+        OUT=$(date +"%D %r Skipped: $PROJECT_NAME") && log "$OUT"
+        return 0
+      fi
+    done
+  fi
+
+  # Check if writing bitmaps for this project has to be disabled
+  WRITEBITMAPS='true';
+  if [ $DONOT_WRITE_BITMAPS_OPT -eq 1 ]; then
+    for BITMAP_PROJECT in "${DONOT_WRITE_BITMAPS}"; do
+      if [ "$BITMAP_PROJECT" == "$PROJECT_NAME" ] ; then
+        WRITEBITMAPS='false';
+      fi
+    done
+  fi
+
+  OUT=$(date +"%D %r Started: $PROJECT_NAME$LOG_OPTS") && log "$OUT"
+
+  git --git-dir="$PROJECT_DIR" config core.logallrefupdates true
+
+  git --git-dir="$PROJECT_DIR" config repack.usedeltabaseoffset true
+  git --git-dir="$PROJECT_DIR" config repack.writebitmaps $WRITEBITMAPS
+  git --git-dir="$PROJECT_DIR" config pack.compression 9
+  git --git-dir="$PROJECT_DIR" config pack.indexversion 2
+
+  git --git-dir="$PROJECT_DIR" config gc.autodetach false
+  git --git-dir="$PROJECT_DIR" config gc.auto 0
+  git --git-dir="$PROJECT_DIR" config gc.autopacklimit 0
+  git --git-dir="$PROJECT_DIR" config gc.packrefs true
+  git --git-dir="$PROJECT_DIR" config gc.reflogexpire never
+  git --git-dir="$PROJECT_DIR" config gc.reflogexpireunreachable never
+  git --git-dir="$PROJECT_DIR" config receive.autogc false
+
+  git --git-dir="$PROJECT_DIR" config pack.window 250
+  git --git-dir="$PROJECT_DIR" config pack.depth 50
+
+  OUT=$(git -c gc.auto=6700 -c gc.autoPackLimit=4 --git-dir="$PROJECT_DIR" gc --auto --prune $OPTS || date +"%D %r Failed: $PROJECT_NAME") \
+    && log "$OUT"
+
+  (find "$PROJECT_DIR/refs/changes" -type d | xargs rmdir;
+   find "$PROJECT_DIR/refs/changes" -type d | xargs rmdir
+  ) 2>/dev/null
+
+  OUT=$(date +"%D %r Finished: $PROJECT_NAME$LOG_OPTS") && log "$OUT"
+}
+
+###########################
+# Main script starts here #
+###########################
+
+SKIP_PROJECTS=
+GC_PROJECTS=
+DONOT_WRITE_BITMAPS=
+SKIP_PROJECTS_OPT=0
+GC_PROJECTS_OPT=0
+DONOT_WRITE_BITMAPS_OPT=0
+
+while getopts 's:p:b:?h' c
+do
+  case $c in
+    s)
+      SKIP_PROJECTS="${SKIP_PROJECTS} ${OPTARG}.git"
+      SKIP_PROJECTS_OPT=1
+      ;;
+    p)
+      GC_PROJECTS="${GC_PROJECTS} ${OPTARG}.git"
+      GC_PROJECTS_OPT=1
+      ;;
+    b)
+      DONOT_WRITE_BITMAPS="${DONOT_WRITE_BITMAPS} ${OPTARG}.git"
+      DONOT_WRITE_BITMAPS_OPT=1
+      ;;
+    h|?)
+      usage
+      ;;
+  esac
+done
+
+test $# -eq 0 || usage
+
+TOP=/var/gerrit/git
+LOG=/var/log/git/gc.log
+
+OUT=$(date +"%D %r Started") && log "$OUT"
+
+if [ $GC_PROJECTS_OPT -eq 1 ]; then
+    gc_specified_projects
+else
+    gc_all_projects
+fi
+
+OUT=$(date +"%D %r Finished") && log "$OUT"
+
+exit 0