$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-date.git /var/lib/mock/f38-build-side-42-init-devel-703741-27088/root/chroot_tmpdir/scmroot/ghc-http-date
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-703741-27088/root/chroot_tmpdir/scmroot/ghc-http-date'...
$ git fetch origin 310e5f6ba74f2fbb36744241b8ed9e5a4d54cc42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-date
 * [new ref]         310e5f6ba74f2fbb36744241b8ed9e5a4d54cc42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 310e5f6 Convert to %autorelease and %autochangelog