$ git clone -n https://src.fedoraproject.org/rpms/foomatic-db.git /var/lib/mock/f41-build-1020768-18018/root/chroot_tmpdir/scmroot/foomatic-db
Cloning into '/var/lib/mock/f41-build-1020768-18018/root/chroot_tmpdir/scmroot/foomatic-db'...
$ git fetch origin 8139400a658b03d4fdbce1c849e24142beffd33d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/foomatic-db
 * [new ref]         8139400a658b03d4fdbce1c849e24142beffd33d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8139400 plans: fix url