$ git clone -n https://src.fedoraproject.org/rpms/bolt.git /var/lib/mock/f42-build-side-1-3534280-46548/root/chroot_tmpdir/scmroot/bolt
Cloning into '/var/lib/mock/f42-build-side-1-3534280-46548/root/chroot_tmpdir/scmroot/bolt'...
$ git fetch origin 8b1bf93449dea9271ca5b30e3cc465a377e87511:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bolt
 * [new ref]         8b1bf93449dea9271ca5b30e3cc465a377e87511 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b1bf93 Install bolt-tests package for the tests