$ git clone -n https://src.fedoraproject.org/rpms/buildah.git /var/lib/mock/f41-build-857566-168136/root/chroot_tmpdir/scmroot/buildah
Cloning into '/var/lib/mock/f41-build-857566-168136/root/chroot_tmpdir/scmroot/buildah'...
$ git fetch origin 085b06d858ff9b2479b9ed6936f15d219459a84b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/buildah
 * [new ref]         085b06d858ff9b2479b9ed6936f15d219459a84b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 085b06d Update to 1.37.5 upstream release