$ git clone -n https://src.fedoraproject.org/rpms/epiphany.git /var/lib/mock/f40-build-796144-140465/root/chroot_tmpdir/scmroot/epiphany
Cloning into '/var/lib/mock/f40-build-796144-140465/root/chroot_tmpdir/scmroot/epiphany'...
$ git fetch origin 5ab5eda3f60cdb838570cec389f9df7a0cb47808:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/epiphany
 * [new ref]         5ab5eda3f60cdb838570cec389f9df7a0cb47808 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ab5eda Update to 46.rc