$ git clone -n https://src.fedoraproject.org/rpms/liblockfile.git /var/lib/mock/f40-build-785866-134131/root/chroot_tmpdir/scmroot/liblockfile
Cloning into '/var/lib/mock/f40-build-785866-134131/root/chroot_tmpdir/scmroot/liblockfile'...
$ git fetch origin e2ac0137b02b81f5fcb51bedf908a9d26d3cfa53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/liblockfile
 * [new ref]         e2ac0137b02b81f5fcb51bedf908a9d26d3cfa53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2ac013 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild