$ git clone -n https://src.fedoraproject.org/rpms/systemtap.git /var/lib/mock/f41-build-847702-164042/root/chroot_tmpdir/scmroot/systemtap
Cloning into '/var/lib/mock/f41-build-847702-164042/root/chroot_tmpdir/scmroot/systemtap'...
$ git fetch origin 44e363ec61035331291400f740ddb6437df2a9b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/systemtap
 * [new ref]         44e363ec61035331291400f740ddb6437df2a9b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 44e363e Automated weekly systemtap rawhide release: 5.2~pre17250223gd07e4284