$ git clone -n https://src.fedoraproject.org/rpms/golang-github-containerd-ttrpc.git /var/lib/mock/f38-build-side-42-init-devel-642967-26394/root/chroot_tmpdir/scmroot/golang-github-containerd-ttrpc
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-642967-26394/root/chroot_tmpdir/scmroot/golang-github-containerd-ttrpc'...
$ git fetch origin f5226953afef1ebb0178641a6759e8afb512e35f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-containerd-ttrpc
 * [new ref]         f5226953afef1ebb0178641a6759e8afb512e35f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f522695 Update ttrpc to v1.2.1