$ git clone -n https://src.fedoraproject.org/rpms/fractal.git /var/lib/mock/f41-build-842333-161587/root/chroot_tmpdir/scmroot/fractal
Cloning into '/var/lib/mock/f41-build-842333-161587/root/chroot_tmpdir/scmroot/fractal'...
$ git fetch origin aa5d96f2783b95a7525b02ede4ab09c53dc15189:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fractal
 * [new ref]         aa5d96f2783b95a7525b02ede4ab09c53dc15189 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa5d96f Update to 7