$ git clone -n https://src.fedoraproject.org/rpms/python-olefile.git /var/lib/mock/f40-build-2027929-47336/root/chroot_tmpdir/scmroot/python-olefile
Cloning into '/var/lib/mock/f40-build-2027929-47336/root/chroot_tmpdir/scmroot/python-olefile'...
$ git fetch origin 251987a320de355d19d0f74a87049d4203fec5e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-olefile
 * [new ref]         251987a320de355d19d0f74a87049d4203fec5e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 251987a Update to 0.47