$ git clone -n https://src.fedoraproject.org/rpms/mysql-selinux.git /var/lib/mock/f39-build-1520699-35831/root/chroot_tmpdir/scmroot/mysql-selinux
Cloning into '/var/lib/mock/f39-build-1520699-35831/root/chroot_tmpdir/scmroot/mysql-selinux'...
$ git fetch origin 9c12585523df82e9f121ecee4d7ac959441ca4dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mysql-selinux
 * [new ref]         9c12585523df82e9f121ecee4d7ac959441ca4dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c12585 Bump release for rebuild