$ git clone -n https://src.fedoraproject.org/rpms/retry.git /var/lib/mock/f45-build-34491-687/root/chroot_tmpdir/scmroot/retry
Cloning into '/var/lib/mock/f45-build-34491-687/root/chroot_tmpdir/scmroot/retry'...
$ git fetch origin 1a44a5f5cc7d022b25913d3b92691d970e5dc551:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/retry
 * [new ref]         1a44a5f5cc7d022b25913d3b92691d970e5dc551 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a44a5f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild