$ git clone -n https://src.fedoraproject.org/rpms/docker-distribution.git /var/lib/mock/f39-build-2462319-61443/root/chroot_tmpdir/scmroot/docker-distribution
Cloning into '/var/lib/mock/f39-build-2462319-61443/root/chroot_tmpdir/scmroot/docker-distribution'...
$ git fetch origin 16b386f1bb736f164e7d1cb888f317126d954a18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/docker-distribution
 * [new ref]         16b386f1bb736f164e7d1cb888f317126d954a18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16b386f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild