$ git clone -n https://src.fedoraproject.org/rpms/epiphany.git /var/lib/mock/f42-build-side-1-3584256-46892/root/chroot_tmpdir/scmroot/epiphany
Cloning into '/var/lib/mock/f42-build-side-1-3584256-46892/root/chroot_tmpdir/scmroot/epiphany'...
$ git fetch origin 6f976c11307e27257e1a67100ae297480e52153d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/epiphany
 * [new ref]         6f976c11307e27257e1a67100ae297480e52153d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f976c1 Update to 48.4