$ git clone -n https://src.fedoraproject.org/rpms/kmahjongg.git /var/lib/mock/f45-build-15261-471/root/chroot_tmpdir/scmroot/kmahjongg
Cloning into '/var/lib/mock/f45-build-15261-471/root/chroot_tmpdir/scmroot/kmahjongg'...
$ git fetch origin 7a2b8e0ba094b62b5de99da3f46911c7eb43e237:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmahjongg
 * [new ref]         7a2b8e0ba094b62b5de99da3f46911c7eb43e237 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a2b8e0 26.08.1