$ git clone -n https://src.fedoraproject.org/rpms/whatweb.git /var/lib/mock/f45-build-38356-723/root/chroot_tmpdir/scmroot/whatweb
Cloning into '/var/lib/mock/f45-build-38356-723/root/chroot_tmpdir/scmroot/whatweb'...
$ git fetch origin 810489ca3bac93c6496aee970cb58467f6d39942:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/whatweb
 * [new ref]         810489ca3bac93c6496aee970cb58467f6d39942 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 810489c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild