$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-common.git /var/lib/mock/f38-build-side-42-init-devel-831979-28375/root/chroot_tmpdir/scmroot/ghc-http-common
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-831979-28375/root/chroot_tmpdir/scmroot/ghc-http-common'...
$ git fetch origin d3d117d32711ee5935f08298b99d27390f5fc1bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-common
 * [new ref]         d3d117d32711ee5935f08298b99d27390f5fc1bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3d117d Convert to %autorelease and %autochangelog