$ git clone -n https://src.fedoraproject.org/rpms/ghc-time-manager.git /var/lib/mock/f38-build-side-42-init-devel-771686-27758/root/chroot_tmpdir/scmroot/ghc-time-manager
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-771686-27758/root/chroot_tmpdir/scmroot/ghc-time-manager'...
$ git fetch origin e9aac01c7f679ae0698611bc5bdbca83aae42d41:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-time-manager
 * [new ref]         e9aac01c7f679ae0698611bc5bdbca83aae42d41 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9aac01 Convert to %autorelease and %autochangelog