$ git clone -n https://src.fedoraproject.org/rpms/ghc-cautious-file.git /var/lib/mock/f38-build-side-42-init-devel-605098-26247/root/chroot_tmpdir/scmroot/ghc-cautious-file
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-605098-26247/root/chroot_tmpdir/scmroot/ghc-cautious-file'...
$ git fetch origin c3197323a41a83f804ddea2fcab35fb0c2635052:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cautious-file
 * [new ref]         c3197323a41a83f804ddea2fcab35fb0c2635052 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c319732 Convert to %autorelease and %autochangelog