$ git clone -n https://src.fedoraproject.org/rpms/xerces-c.git /var/lib/mock/f40-build-789079-135506/root/chroot_tmpdir/scmroot/xerces-c
Cloning into '/var/lib/mock/f40-build-789079-135506/root/chroot_tmpdir/scmroot/xerces-c'...
$ git fetch origin f30b99b07a0bd0ae11f8daa74a8a1e95755332b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xerces-c
 * [new ref]         f30b99b07a0bd0ae11f8daa74a8a1e95755332b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f30b99b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild