$ git clone -n https://src.fedoraproject.org/rpms/doctest.git /var/lib/mock/eln-build-side-115079-61055516-6588275/root/chroot_tmpdir/scmroot/doctest
Cloning into '/var/lib/mock/eln-build-side-115079-61055516-6588275/root/chroot_tmpdir/scmroot/doctest'...
$ git fetch origin 5099d7652886ad536d8848dda5289908079249f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/doctest
 * [new ref]         5099d7652886ad536d8848dda5289908079249f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5099d76 new upstream 2.4.12