$ git clone -n https://src.fedoraproject.org/rpms/ed.git /var/lib/mock/f40-build-2244878-53728/root/chroot_tmpdir/scmroot/ed
Cloning into '/var/lib/mock/f40-build-2244878-53728/root/chroot_tmpdir/scmroot/ed'...
$ git fetch origin fb0c9752cea3bc073c37810b54e9e69f59770d1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ed
 * [new ref]         fb0c9752cea3bc073c37810b54e9e69f59770d1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb0c975 Avoid lzip dependency in RHEL builds