$ git clone -n https://src.fedoraproject.org/rpms/open-mtools.git /var/lib/mock/f45-build-20957-576/root/chroot_tmpdir/scmroot/open-mtools
Cloning into '/var/lib/mock/f45-build-20957-576/root/chroot_tmpdir/scmroot/open-mtools'...
$ git fetch origin 68f970d2410402e5513499c3a9b40c6f907f3126:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/open-mtools
 * [new ref]         68f970d2410402e5513499c3a9b40c6f907f3126 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68f970d Remove an obsolete configuration file for rpmlint