$ git clone -n https://src.fedoraproject.org/rpms/grype.git /var/lib/mock/f45-build-13055-446/root/chroot_tmpdir/scmroot/grype
Cloning into '/var/lib/mock/f45-build-13055-446/root/chroot_tmpdir/scmroot/grype'...
$ git fetch origin 9b8dcb34a752078a8c617a89cb0e6a4e02304255:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grype
 * [new ref]         9b8dcb34a752078a8c617a89cb0e6a4e02304255 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b8dcb3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild