$ git clone -n https://src.fedoraproject.org/rpms/librx.git /var/lib/mock/f40-build-1937336-25150/root/chroot_tmpdir/scmroot/librx
Cloning into '/var/lib/mock/f40-build-1937336-25150/root/chroot_tmpdir/scmroot/librx'...
$ git fetch origin 61f16415bb8dbc759e00d8af7e93828b8a70ce20:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librx
 * [new ref]         61f16415bb8dbc759e00d8af7e93828b8a70ce20 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61f1641 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild