$ git clone -n https://src.fedoraproject.org/rpms/mysql-mmm.git /var/lib/mock/f41-build-1273220-23132/root/chroot_tmpdir/scmroot/mysql-mmm
Cloning into '/var/lib/mock/f41-build-1273220-23132/root/chroot_tmpdir/scmroot/mysql-mmm'...
$ git fetch origin dbbb1771045599f20e10c1b756f362eb5d789fee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mysql-mmm
 * [new ref]         dbbb1771045599f20e10c1b756f362eb5d789fee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbbb177 Eliminate use of obsolete %patchN syntax (#2283636)