$ git clone -n https://src.fedoraproject.org/rpms/python-pendulum.git /var/lib/mock/f42-build-side-1-3586684-46924/root/chroot_tmpdir/scmroot/python-pendulum
Cloning into '/var/lib/mock/f42-build-side-1-3586684-46924/root/chroot_tmpdir/scmroot/python-pendulum'...
$ git fetch origin 7e9a2721f4e978bdd18a5b0557e9a690803be911:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pendulum
 * [new ref]         7e9a2721f4e978bdd18a5b0557e9a690803be911 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e9a272 Update to 3.1.0 (close RHBZ#2361121)