$ git clone -n https://src.fedoraproject.org/rpms/algol68g.git /var/lib/mock/f39-build-1648737-40450/root/chroot_tmpdir/scmroot/algol68g
Cloning into '/var/lib/mock/f39-build-1648737-40450/root/chroot_tmpdir/scmroot/algol68g'...
$ git fetch origin 3347d65ab326bbec4d03a272120b520410ce2efd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/algol68g
 * [new ref]         3347d65ab326bbec4d03a272120b520410ce2efd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3347d65 Update to 3.4.4