$ git clone -n https://src.fedoraproject.org/rpms/restic.git /var/lib/mock/f45-build-34483-687/root/chroot_tmpdir/scmroot/restic
Cloning into '/var/lib/mock/f45-build-34483-687/root/chroot_tmpdir/scmroot/restic'...
$ git fetch origin fc266f00d50116bfca5ddcd945b438be25fdf1d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/restic
 * [new ref]         fc266f00d50116bfca5ddcd945b438be25fdf1d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc266f0 Update to 0.19.1 upstream release