$ git clone -n https://src.fedoraproject.org/rpms/python-isoduration.git /var/lib/mock/f45-build-31151-650/root/chroot_tmpdir/scmroot/python-isoduration
Cloning into '/var/lib/mock/f45-build-31151-650/root/chroot_tmpdir/scmroot/python-isoduration'...
$ git fetch origin 111c8715deb4fcc417322aa403da372bb91d8669:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-isoduration
 * [new ref]         111c8715deb4fcc417322aa403da372bb91d8669 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 111c871 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild