$ git clone -n https://src.fedoraproject.org/rpms/kst.git /var/lib/mock/f41-build-1021965-18041/root/chroot_tmpdir/scmroot/kst
Cloning into '/var/lib/mock/f41-build-1021965-18041/root/chroot_tmpdir/scmroot/kst'...
$ git fetch origin 5f4f275cb057b6b84ebd76b5dc057e237cc1baa9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kst
 * [new ref]         5f4f275cb057b6b84ebd76b5dc057e237cc1baa9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f4f275 Eliminate use of obsolete %patchN syntax (#2283636)