$ git clone -n https://src.fedoraproject.org/rpms/git-cola.git /var/lib/mock/f45-build-11071-426/root/chroot_tmpdir/scmroot/git-cola
Cloning into '/var/lib/mock/f45-build-11071-426/root/chroot_tmpdir/scmroot/git-cola'...
$ git fetch origin beca7452d11b7dde280f1ae79a26f0ac120f8e4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-cola
 * [new ref]         beca7452d11b7dde280f1ae79a26f0ac120f8e4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at beca745 Remove stale 'xmlto' BuildRequires