$ git clone -n https://src.fedoraproject.org/rpms/mutt.git /var/lib/mock/f41-build-side-1-2648942-27452/root/chroot_tmpdir/scmroot/mutt
Cloning into '/var/lib/mock/f41-build-side-1-2648942-27452/root/chroot_tmpdir/scmroot/mutt'...
$ git fetch origin 5f3068f71fda2d3582cf4d6c4b5b2bc56a148bbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mutt
 * [new ref]         5f3068f71fda2d3582cf4d6c4b5b2bc56a148bbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f3068f Merge #7 `enable CI`