$ git clone -n https://src.fedoraproject.org/rpms/mariadb.git /var/lib/mock/f41-build-696705-12816/root/chroot_tmpdir/scmroot/mariadb
Cloning into '/var/lib/mock/f41-build-696705-12816/root/chroot_tmpdir/scmroot/mariadb'...
$ git fetch origin 77b69d18c8788c90182959707aae875d330bb153:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mariadb
 * [new ref]         77b69d18c8788c90182959707aae875d330bb153 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77b69d1 Unversioned package 'mariadb' retired in favor of versioned package 'mariadb10.11'