$ git clone -n https://src.fedoraproject.org/rpms/ghc-crypto-api.git /var/lib/mock/f38-build-side-42-init-devel-841980-28415/root/chroot_tmpdir/scmroot/ghc-crypto-api
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-841980-28415/root/chroot_tmpdir/scmroot/ghc-crypto-api'...
$ git fetch origin 88e4da19142597707ceb5615ee925b3ca41584a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-crypto-api
 * [new ref]         88e4da19142597707ceb5615ee925b3ca41584a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88e4da1 Convert to %autorelease and %autochangelog