$ git clone -n https://src.fedoraproject.org/rpms/python-icalendar.git /var/lib/mock/f40-build-2634928-66038/root/chroot_tmpdir/scmroot/python-icalendar
Cloning into '/var/lib/mock/f40-build-2634928-66038/root/chroot_tmpdir/scmroot/python-icalendar'...
$ git fetch origin 80ee9f014b82bd36b5f3d0370595ca352c0492e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-icalendar
 * [new ref]         80ee9f014b82bd36b5f3d0370595ca352c0492e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80ee9f0 5.0.12