$ git clone -n https://src.fedoraproject.org/rpms/maildir-utils.git /var/lib/mock/f45-build-17953-506/root/chroot_tmpdir/scmroot/maildir-utils
Cloning into '/var/lib/mock/f45-build-17953-506/root/chroot_tmpdir/scmroot/maildir-utils'...
$ git fetch origin d7760fecd6bdcf9d3e4e128bac2226a537c7771f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maildir-utils
 * [new ref]         d7760fecd6bdcf9d3e4e128bac2226a537c7771f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7760fe Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild