$ git clone -n https://src.fedoraproject.org/rpms/systemtap.git /var/lib/mock/f41-build-832228-157256/root/chroot_tmpdir/scmroot/systemtap
Cloning into '/var/lib/mock/f41-build-832228-157256/root/chroot_tmpdir/scmroot/systemtap'...
$ git fetch origin eedaf37e14640b0be71c88fefd6fed75b86752ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/systemtap
 * [new ref]         eedaf37e14640b0be71c88fefd6fed75b86752ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eedaf37 Automated weekly systemtap rawhide release: 5.2~pre17224323g98d1ea34