$ git clone -n https://src.fedoraproject.org/rpms/rust-x11.git /var/lib/mock/f45-build-46241-832/root/chroot_tmpdir/scmroot/rust-x11
Cloning into '/var/lib/mock/f45-build-46241-832/root/chroot_tmpdir/scmroot/rust-x11'...
$ git fetch origin a33128bbb8ad27ee6159681298011b7b19de7cf2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-x11
 * [new ref]         a33128bbb8ad27ee6159681298011b7b19de7cf2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a33128b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild