$ git clone -n https://src.fedoraproject.org/rpms/ghc-yesod-persistent.git /var/lib/mock/f38-build-side-42-init-devel-1387067-30706/root/chroot_tmpdir/scmroot/ghc-yesod-persistent
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1387067-30706/root/chroot_tmpdir/scmroot/ghc-yesod-persistent'...
$ git fetch origin 0ccd6c79b0b411e688cf582e391c0292b6a77f68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-yesod-persistent
 * [new ref]         0ccd6c79b0b411e688cf582e391c0292b6a77f68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ccd6c7 Convert to %autorelease and %autochangelog