$ git clone -n https://src.fedoraproject.org/rpms/python-geomdl.git /var/lib/mock/f42-build-side-1-3586760-46925/root/chroot_tmpdir/scmroot/python-geomdl
Cloning into '/var/lib/mock/f42-build-side-1-3586760-46925/root/chroot_tmpdir/scmroot/python-geomdl'...
$ git fetch origin d2dad6db1c13542a1a29a8ee4155de405e8026f9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-geomdl
 * [new ref]         d2dad6db1c13542a1a29a8ee4155de405e8026f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2dad6d Fix broken weak dependency on -doc subpackage