$ git clone -n https://src.fedoraproject.org/rpms/python-PyGithub.git /var/lib/mock/f41-build-side-2-python-2726130-30762/root/chroot_tmpdir/scmroot/python-PyGithub
Cloning into '/var/lib/mock/f41-build-side-2-python-2726130-30762/root/chroot_tmpdir/scmroot/python-PyGithub'...
$ git fetch origin 0888fd0e9030be51a91976cfd14f27051765f39c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-PyGithub
 * [new ref]         0888fd0e9030be51a91976cfd14f27051765f39c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0888fd0 Update to 2.3.0 (RHBZ#2216820)