$ git clone -n https://src.fedoraproject.org/rpms/xstream.git /var/lib/mock/f41-build-2044755-25295/root/chroot_tmpdir/scmroot/xstream
Cloning into '/var/lib/mock/f41-build-2044755-25295/root/chroot_tmpdir/scmroot/xstream'...
$ git fetch origin b5a87ca22e94ea3fe171fc74f113790e0156a7b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xstream
 * [new ref]         b5a87ca22e94ea3fe171fc74f113790e0156a7b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5a87ca Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild