$ git clone -n https://src.fedoraproject.org/rpms/grpcurl.git /var/lib/mock/f40-build-807526-145229/root/chroot_tmpdir/scmroot/grpcurl
Cloning into '/var/lib/mock/f40-build-807526-145229/root/chroot_tmpdir/scmroot/grpcurl'...
$ git fetch origin 537c250b682a9acee7da729be3ea022d246a8f55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grpcurl
 * [new ref]         537c250b682a9acee7da729be3ea022d246a8f55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 537c250 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild