$ git clone -n https://src.fedoraproject.org/rpms/ghc-scientific.git /var/lib/mock/f38-build-side-42-init-devel-943479-28778/root/chroot_tmpdir/scmroot/ghc-scientific
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-943479-28778/root/chroot_tmpdir/scmroot/ghc-scientific'...
$ git fetch origin 1b2e58a1bd8f91c6f2d7a4bfe837cff9c7e8a856:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-scientific
 * [new ref]         1b2e58a1bd8f91c6f2d7a4bfe837cff9c7e8a856 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b2e58a Convert to %autorelease and %autochangelog