$ git clone -n https://src.fedoraproject.org/rpms/ghc-RSA.git /var/lib/mock/f38-build-side-42-init-devel-1110538-30078/root/chroot_tmpdir/scmroot/ghc-RSA
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1110538-30078/root/chroot_tmpdir/scmroot/ghc-RSA'...
$ git fetch origin e8e7ba154bf32186074eb420b6341ab1c0f57053:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-RSA
 * [new ref]         e8e7ba154bf32186074eb420b6341ab1c0f57053 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8e7ba1 Convert to %autorelease and %autochangelog