$ git clone -n https://src.fedoraproject.org/rpms/retro-gtk.git /var/lib/mock/f39-build-1489934-34502/root/chroot_tmpdir/scmroot/retro-gtk
Cloning into '/var/lib/mock/f39-build-1489934-34502/root/chroot_tmpdir/scmroot/retro-gtk'...
$ git fetch origin 1b8112a1aa08d59779d9f643c2686f8f237cb087:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/retro-gtk
 * [new ref]         1b8112a1aa08d59779d9f643c2686f8f237cb087 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b8112a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild