$ git clone -n https://src.fedoraproject.org/rpms/mod_psgi.git /var/lib/mock/f42-build-3460557-45515/root/chroot_tmpdir/scmroot/mod_psgi
Cloning into '/var/lib/mock/f42-build-3460557-45515/root/chroot_tmpdir/scmroot/mod_psgi'...
$ git fetch origin 290810f9e6c92d8cef36954b55d42791ea7ee63e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mod_psgi
 * [new ref]         290810f9e6c92d8cef36954b55d42791ea7ee63e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 290810f Add explicit BR: libxcrypt-devel