$ git clone -n https://src.fedoraproject.org/rpms/python-pyrpm.git /var/lib/mock/f39-build-1606417-38615/root/chroot_tmpdir/scmroot/python-pyrpm
Cloning into '/var/lib/mock/f39-build-1606417-38615/root/chroot_tmpdir/scmroot/python-pyrpm'...
$ git fetch origin c8fdb1e07c5ce979d32018d68f50dd7a42c1264d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyrpm
 * [new ref]         c8fdb1e07c5ce979d32018d68f50dd7a42c1264d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8fdb1e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild