$ git clone -n https://src.fedoraproject.org/rpms/mxparser.git /var/lib/mock/f40-build-2647253-66691/root/chroot_tmpdir/scmroot/mxparser
Cloning into '/var/lib/mock/f40-build-2647253-66691/root/chroot_tmpdir/scmroot/mxparser'...
$ git fetch origin f773d62a4b363ac7e529e768f051afcadb42b3ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mxparser
 * [new ref]         f773d62a4b363ac7e529e768f051afcadb42b3ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f773d62 Rebuilt for java-21-openjdk as system jdk