$ git clone -n https://src.fedoraproject.org/rpms/ftp.git /var/lib/mock/f45-build-9322-401/root/chroot_tmpdir/scmroot/ftp
Cloning into '/var/lib/mock/f45-build-9322-401/root/chroot_tmpdir/scmroot/ftp'...
$ git fetch origin fee51cb8674dbea60e7229e7817676256578a057:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ftp
 * [new ref]         fee51cb8674dbea60e7229e7817676256578a057 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fee51cb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild