$ git clone -n https://src.fedoraproject.org/rpms/python-cramjam.git /var/lib/mock/f41-build-852212-166286/root/chroot_tmpdir/scmroot/python-cramjam
Cloning into '/var/lib/mock/f41-build-852212-166286/root/chroot_tmpdir/scmroot/python-cramjam'...
$ git fetch origin 2fd09fecdbd1e2925308d00655e99673cc7f3833:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-cramjam
 * [new ref]         2fd09fecdbd1e2925308d00655e99673cc7f3833 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fd09fe Rebuilt with latest crate dependencies