$ git clone -n https://src.fedoraproject.org/rpms/python-icalendar.git /var/lib/mock/f39-build-1606487-38616/root/chroot_tmpdir/scmroot/python-icalendar
Cloning into '/var/lib/mock/f39-build-1606487-38616/root/chroot_tmpdir/scmroot/python-icalendar'...
$ git fetch origin a9d6159541653cbf565a391b5c830e54951c63f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-icalendar
 * [new ref]         a9d6159541653cbf565a391b5c830e54951c63f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a9d6159 5.0.11