$ git clone -n https://src.fedoraproject.org/rpms/meg.git /var/lib/mock/f39-build-1507872-35314/root/chroot_tmpdir/scmroot/meg
Cloning into '/var/lib/mock/f39-build-1507872-35314/root/chroot_tmpdir/scmroot/meg'...
$ git fetch origin e585eee5aca7ce01019f24be08f4ea73e9f64609:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/meg
 * [new ref]         e585eee5aca7ce01019f24be08f4ea73e9f64609 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e585eee Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild