$ git clone -n https://src.fedoraproject.org/rpms/ghc-regex-applicative.git /var/lib/mock/f38-build-side-42-init-devel-567821-25905/root/chroot_tmpdir/scmroot/ghc-regex-applicative
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-567821-25905/root/chroot_tmpdir/scmroot/ghc-regex-applicative'...
$ git fetch origin 82b74449379fe6ab1c793d62f0610870081bc291:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-regex-applicative
 * [new ref]         82b74449379fe6ab1c793d62f0610870081bc291 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 82b7444 set %autorelease baserelease for upgrade from f37