$ git clone -n https://src.fedoraproject.org/rpms/libmodulemd1.git /var/lib/mock/f40-build-2126380-50780/root/chroot_tmpdir/scmroot/libmodulemd1
Cloning into '/var/lib/mock/f40-build-2126380-50780/root/chroot_tmpdir/scmroot/libmodulemd1'...
$ git fetch origin aae8e94d13a157c6f209314ef791fcc7da21bf73:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmodulemd1
 * [new ref]         aae8e94d13a157c6f209314ef791fcc7da21bf73 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aae8e94 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild