$ git clone -n https://src.fedoraproject.org/rpms/guayadeque.git /var/lib/mock/f45-build-13234-447/root/chroot_tmpdir/scmroot/guayadeque
Cloning into '/var/lib/mock/f45-build-13234-447/root/chroot_tmpdir/scmroot/guayadeque'...
$ git fetch origin 3c8fb2105bd1633c26ebb42d32723163d0e4829d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/guayadeque
 * [new ref]         3c8fb2105bd1633c26ebb42d32723163d0e4829d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c8fb21 Update to 0.7.6-1