$ git clone -n https://src.fedoraproject.org/rpms/openexr2.git /var/lib/mock/f40-build-2127039-50782/root/chroot_tmpdir/scmroot/openexr2
Cloning into '/var/lib/mock/f40-build-2127039-50782/root/chroot_tmpdir/scmroot/openexr2'...
$ git fetch origin 24469f88db47938a4e00eda1569c4b3a871bde9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openexr2
 * [new ref]         24469f88db47938a4e00eda1569c4b3a871bde9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 24469f8 Fix test with a different zlib implementation