$ git clone -n https://src.fedoraproject.org/rpms/ghc-microstache.git /var/lib/mock/f41-build-840177-160595/root/chroot_tmpdir/scmroot/ghc-microstache
Cloning into '/var/lib/mock/f41-build-840177-160595/root/chroot_tmpdir/scmroot/ghc-microstache'...
$ git fetch origin 1d6ace10c0f6a75794c345120958010913eac537:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-microstache
 * [new ref]         1d6ace10c0f6a75794c345120958010913eac537 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d6ace1 revise .cabal file