$ git clone -n https://src.fedoraproject.org/rpms/publican.git /var/lib/mock/f45-build-29052-635/root/chroot_tmpdir/scmroot/publican
Cloning into '/var/lib/mock/f45-build-29052-635/root/chroot_tmpdir/scmroot/publican'...
$ git fetch origin 2f6de0a5fd1045741ccd383262bd5839d7dc1640:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/publican
 * [new ref]         2f6de0a5fd1045741ccd383262bd5839d7dc1640 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f6de0a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild