$ git clone -n https://src.fedoraproject.org/rpms/mxparser.git /var/lib/mock/f39-build-2064117-49197/root/chroot_tmpdir/scmroot/mxparser
Cloning into '/var/lib/mock/f39-build-2064117-49197/root/chroot_tmpdir/scmroot/mxparser'...
$ git fetch origin 525473c0cc5735caf6953a7ba39911a5a72b209d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mxparser
 * [new ref]         525473c0cc5735caf6953a7ba39911a5a72b209d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 525473c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild