$ git clone -n https://src.fedoraproject.org/rpms/libmd.git /var/lib/mock/f40-build-785434-133953/root/chroot_tmpdir/scmroot/libmd
Cloning into '/var/lib/mock/f40-build-785434-133953/root/chroot_tmpdir/scmroot/libmd'...
$ git fetch origin ff8a88f301918fa92f7e0badbe6c33854cb51f84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmd
 * [new ref]         ff8a88f301918fa92f7e0badbe6c33854cb51f84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff8a88f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild