$ git clone -n https://src.fedoraproject.org/rpms/git-ftp.git /var/lib/mock/f45-build-11073-426/root/chroot_tmpdir/scmroot/git-ftp
Cloning into '/var/lib/mock/f45-build-11073-426/root/chroot_tmpdir/scmroot/git-ftp'...
$ git fetch origin 05821732493dab3986c2deb47d8b692ec9ad7c2b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-ftp
 * [new ref]         05821732493dab3986c2deb47d8b692ec9ad7c2b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0582173 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild