$ git clone -n https://src.fedoraproject.org/rpms/jakarta-servlet.git /var/lib/mock/f40-build-2227136-53001/root/chroot_tmpdir/scmroot/jakarta-servlet
Cloning into '/var/lib/mock/f40-build-2227136-53001/root/chroot_tmpdir/scmroot/jakarta-servlet'...
$ git fetch origin 8fea7deeb9267be8e09d2101f54a9ec92af5084c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jakarta-servlet
 * [new ref]         8fea7deeb9267be8e09d2101f54a9ec92af5084c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8fea7de Update javapackages test plan to f40