$ git clone -n https://src.fedoraproject.org/rpms/wxsvg.git /var/lib/mock/f45-build-38534-725/root/chroot_tmpdir/scmroot/wxsvg
Cloning into '/var/lib/mock/f45-build-38534-725/root/chroot_tmpdir/scmroot/wxsvg'...
$ git fetch origin 4d281a717cb4e9422fde2f46f2a99b806db6b052:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wxsvg
 * [new ref]         4d281a717cb4e9422fde2f46f2a99b806db6b052 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d281a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild