$ git clone -n https://src.fedoraproject.org/rpms/ghc-securemem.git /var/lib/mock/f38-build-side-42-init-devel-989676-29092/root/chroot_tmpdir/scmroot/ghc-securemem
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-989676-29092/root/chroot_tmpdir/scmroot/ghc-securemem'...
$ git fetch origin 6dad8fb35b20cd860c452708ad825cb1266f881d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-securemem
 * [new ref]         6dad8fb35b20cd860c452708ad825cb1266f881d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6dad8fb Convert to %autorelease and %autochangelog