$ git clone -n https://src.fedoraproject.org/rpms/odhcp6c.git /var/lib/mock/f40-build-775555-128098/root/chroot_tmpdir/scmroot/odhcp6c
Cloning into '/var/lib/mock/f40-build-775555-128098/root/chroot_tmpdir/scmroot/odhcp6c'...
$ git fetch origin fefe366e2aa9d44b1528189dd30e70dbbca48a53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/odhcp6c
 * [new ref]         fefe366e2aa9d44b1528189dd30e70dbbca48a53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fefe366 Update to commit bcd2836