$ git clone -n https://src.fedoraproject.org/rpms/libtiff.git /var/lib/mock/f41-build-843177-161910/root/chroot_tmpdir/scmroot/libtiff
Cloning into '/var/lib/mock/f41-build-843177-161910/root/chroot_tmpdir/scmroot/libtiff'...
$ git reset --hard 550f8063ac5f128dbc35ba9700a09aa0d2d36d50
HEAD is now at 550f806 make it possible to share spec file in other branches