$ git clone -n https://src.fedoraproject.org/rpms/cramjam-cli.git /var/lib/mock/f41-build-side-1-2882870-34495/root/chroot_tmpdir/scmroot/cramjam-cli
Cloning into '/var/lib/mock/f41-build-side-1-2882870-34495/root/chroot_tmpdir/scmroot/cramjam-cli'...
$ git fetch origin b2bd8712cea3ee0c115b0e083d4c440d3516b513:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cramjam-cli
 * [new ref]         b2bd8712cea3ee0c115b0e083d4c440d3516b513 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2bd871 Rebuilt with latest crate dependencies