$ git clone -n https://src.fedoraproject.org/rpms/libfastjson.git /var/lib/mock/f41-build-826081-154851/root/chroot_tmpdir/scmroot/libfastjson
Cloning into '/var/lib/mock/f41-build-826081-154851/root/chroot_tmpdir/scmroot/libfastjson'...
$ git fetch origin 4a10d3592d7d5f319a852a074774edf3b9060be2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libfastjson
 * [new ref]         4a10d3592d7d5f319a852a074774edf3b9060be2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a10d35 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild