$ git clone -n https://src.fedoraproject.org/rpms/jgoodies-looks.git /var/lib/mock/f40-build-2194168-51486/root/chroot_tmpdir/scmroot/jgoodies-looks
Cloning into '/var/lib/mock/f40-build-2194168-51486/root/chroot_tmpdir/scmroot/jgoodies-looks'...
$ git fetch origin acc2c6f45ca6b60561ddf50a1f11a24eecf84a69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jgoodies-looks
 * [new ref]         acc2c6f45ca6b60561ddf50a1f11a24eecf84a69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acc2c6f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild