$ git clone -n https://src.fedoraproject.org/rpms/ghc-microstache.git /var/lib/mock/f39-build-2098150-50435/root/chroot_tmpdir/scmroot/ghc-microstache
Cloning into '/var/lib/mock/f39-build-2098150-50435/root/chroot_tmpdir/scmroot/ghc-microstache'...
$ git fetch origin 6f3bf54b3ff78f3ba5e4588361a50a6ac3d21e2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-microstache
 * [new ref]         6f3bf54b3ff78f3ba5e4588361a50a6ac3d21e2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f3bf54 bump release