$ git clone -n https://src.fedoraproject.org/rpms/python-cerberus.git /var/lib/mock/f45-build-29883-641/root/chroot_tmpdir/scmroot/python-cerberus
Cloning into '/var/lib/mock/f45-build-29883-641/root/chroot_tmpdir/scmroot/python-cerberus'...
$ git fetch origin 1b4632c415b6fc9f71f13d99a8cec61363ca528c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-cerberus
 * [new ref]         1b4632c415b6fc9f71f13d99a8cec61363ca528c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b4632c opt-in to packit for rawhide