$ git clone -n https://src.fedoraproject.org/rpms/ptyxis.git /var/lib/mock/f42-build-3272687-41307/root/chroot_tmpdir/scmroot/ptyxis
Cloning into '/var/lib/mock/f42-build-3272687-41307/root/chroot_tmpdir/scmroot/ptyxis'...
$ git fetch origin 76dfe497155b38c79170a883b7b9365f5b262139:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ptyxis
 * [new ref]         76dfe497155b38c79170a883b7b9365f5b262139 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76dfe49 Update to 47.10