$ git clone -n https://src.fedoraproject.org/rpms/SimGear.git /var/lib/mock/f31-build-109529-33939/root/chroot_tmpdir/scmroot/SimGear
Cloning into '/var/lib/mock/f31-build-109529-33939/root/chroot_tmpdir/scmroot/SimGear'...
$ git reset --hard d50c3362ac60ac93c3443f17df08d2a9334b1afe
HEAD is now at d50c336 rebuild