$ git clone -n https://src.fedoraproject.org/rpms/git-cola.git /var/lib/mock/f41-build-side-2-python-2728712-30800/root/chroot_tmpdir/scmroot/git-cola
Cloning into '/var/lib/mock/f41-build-side-2-python-2728712-30800/root/chroot_tmpdir/scmroot/git-cola'...
$ git fetch origin dcd2e8a19b2d6b1c36d281e6991ec809c54a1eba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-cola
 * [new ref]         dcd2e8a19b2d6b1c36d281e6991ec809c54a1eba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcd2e8a Update git-cola to 4.8.1