$ git clone -n https://src.fedoraproject.org/rpms/luminance-hdr.git /var/lib/mock/f39-build-1563217-37476/root/chroot_tmpdir/scmroot/luminance-hdr
Cloning into '/var/lib/mock/f39-build-1563217-37476/root/chroot_tmpdir/scmroot/luminance-hdr'...
$ git fetch origin a52477bb20f580690015dbc4d08b28999368c0bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/luminance-hdr
 * [new ref]         a52477bb20f580690015dbc4d08b28999368c0bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a52477b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild