$ git clone -n https://src.fedoraproject.org/rpms/golang-google-grpc.git /var/lib/mock/f39-build-1902435-42865/root/chroot_tmpdir/scmroot/golang-google-grpc
Cloning into '/var/lib/mock/f39-build-1902435-42865/root/chroot_tmpdir/scmroot/golang-google-grpc'...
$ git fetch origin 6319b4c706ab54c0aca200eb56a59319309889f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-google-grpc
 * [new ref]         6319b4c706ab54c0aca200eb56a59319309889f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6319b4c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild