$ git clone -n https://src.fedoraproject.org/rpms/python-traitlets.git /var/lib/mock/f40-build-2223568-52745/root/chroot_tmpdir/scmroot/python-traitlets
Cloning into '/var/lib/mock/f40-build-2223568-52745/root/chroot_tmpdir/scmroot/python-traitlets'...
$ git fetch origin 480ef3dd06a2fcebb518eb6c7058ffde74e9de89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-traitlets
 * [new ref]         480ef3dd06a2fcebb518eb6c7058ffde74e9de89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 480ef3d Drop now redundant -w flag for %pyproject_buildrequires