$ git clone -n https://src.fedoraproject.org/rpms/golang-google-grpc.git /var/lib/mock/f40-build-2386503-60496/root/chroot_tmpdir/scmroot/golang-google-grpc
Cloning into '/var/lib/mock/f40-build-2386503-60496/root/chroot_tmpdir/scmroot/golang-google-grpc'...
$ git fetch origin b9ead1685cfff64f47837ba241fa11b1fa1d6a6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-google-grpc
 * [new ref]         b9ead1685cfff64f47837ba241fa11b1fa1d6a6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9ead16 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild