$ git clone -n https://src.fedoraproject.org/rpms/R-RcppCCTZ.git /var/lib/mock/f39-build-1539154-36417/root/chroot_tmpdir/scmroot/R-RcppCCTZ
Cloning into '/var/lib/mock/f39-build-1539154-36417/root/chroot_tmpdir/scmroot/R-RcppCCTZ'...
$ git fetch origin e5ff7cae0f31d5658d76bfb236576cddaac6d57c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-RcppCCTZ
 * [new ref]         e5ff7cae0f31d5658d76bfb236576cddaac6d57c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5ff7ca Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild